Volume 54, Issue 3 p. 584-586

Chromatographic Analyses of Xanthophylls in Egg Yolks from Laying Hens Fed Turf Bermudagrass(Cynodon dactylon) Meal

C. A. BAILEY

C. A. BAILEY

Dept. of Poultry Science, Texas Agricultural Experiment Station, The Texas A&M Univ. System, College Station, TX 77843.

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B. H. CHEN

B. H. CHEN

Dept. of Poultry Science, Texas Agricultural Experiment Station, The Texas A&M Univ. System, College Station, TX 77843.

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First published: May 1989
Citations: 17

This study was supported, in part, by a grant from Maxim Productions, Boling, Texas and The Texas Agricultural Experiment Station,

ABSTRACT

The characterization of xanthophylls in egg yolks from laying hens fed turf bermudagrass (Cynodon dactylon) meal was studied. Laying hens were fed 2 wk on a milo-soybean meal diet to deplete the birds' xanthophyll stores from developing ova prior to introduction of 9% turf bermudagrass. After an additional 4 wk the various carotcnoids present in egg yolks were determined by open-column, thin-layer, and high-performance liquid chromatography. Chromatographic analyses suggest that the yolk color was due mainly to the presence of free lutein and zeaxanthin at a ratio of 4:1. Neoxanthin and violaxanthin were present in minor amounts. The presence of p-carotene was not detected.